The AirTAC Airtac SCD Standard Cylinder SCD80X25S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø80mm bore, 25mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X25S is a double-acting, double-rod pneumatic cylinder delivering identical push and pull force of 2268 N at 0.5 MPa, thanks to its 25 mm rod passing through both end caps. This short 25 mm stroke model includes a built-in magnet, allowing CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for precise end-of-stroke detection without external brackets.
With a body length A of 257 mm and an adjustable air cushion of 28 mm at each end, it decelerates the piston smoothly even in rapid short-stroke cycles. The PT3/8 ports and M20x1.5 rod threads suit compact dual-tooling setups where the rear rod extension can carry a stopper or sensor flag.
| Model | Airtac SCD Standard Cylinder SCD80X25S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 25 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The through-rod design lets you attach a workpiece carrier to both ends, shuttling parts between two stations with equal speed and force in each direction.
The built-in magnet enables CMSG/DMSG sensors to confirm the 25 mm stroke completion, ideal for high-cycle ejector or diverter gates where position feedback is critical.
Dual rod support provides better resistance to twisting than a single-rod cylinder, helping maintain alignment when pushing small components onto a fixture.
The SCD80 delivers 2268 N at 0.5 MPa; if your application needs more force, step up to the SCD100 which provides 3681 N at the same pressure. For lighter, faster tasks, the SCD63 offers 1402 N. Because the rod extends from both ends, this cylinder is ideal when you need to mount tooling or a cam on the rear side—if you only need force from one end, the single-rod SC80 is a simpler, lower-cost alternative. For a drop-in replacement, match the 80 mm bore, 25 mm stroke, PT3/8 ports, basic mounting, and the -S magnet option.
Double-rod checklist
Because the piston rod passes through both ends, the effective pressure area is identical in both directions. At 0.5 MPa the force is 2268 N push and 2268 N pull; at 0.7 MPa it is 3175 N, and at the maximum operating pressure of 0.9 MPa it reaches 4082 N.
Choose the SCD when you need equal force and speed in both directions, or when you want to use the rear rod extension to mount a sensor flag, stopper bolt, or secondary tooling. The dual-rod bearing also gives better guidance against side loads, though for high side loads a dedicated guided cylinder is still recommended.
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